Rechargeable Tool Side-Mounted Fastener Stability
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Solution Overview
Problem
Rechargeable electric tools, such as impact drivers, are unstable when suspended from a waist belt due to the forward-and-backward swinging motion caused by the placement of the fastener tool, leading to loss of stability and interference with the operator's work.
Innovation Solution
A fastener tool is attached to the lower side surface of the housing with an engagement portion protruding rearward, utilizing a screwing mechanism and anti-rotation member to secure it, allowing attachment on either side surface and varying protrusion angles for improved stability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the fastener tool is provided on the rear surface side of the handle, then the forward-and-backward swinging motion is suppressed, but the electric tool swings right and left directions and the distal end protrudes sideward disrupting work
Solution Approach 1:
The patent moves the fastener tool from the rear surface side to the lower side surface of the housing, changing the attachment dimension. This repositioning allows the engagement portion to protrude rearward while maintaining proper orientation, preventing both forward-backward and right-left swinging, and eliminating sideward protrusion that disrupts work.
2Adaptability or versatility
If the fastener tool is provided rearward of the main body, then it can be suspended from waist belt, but the electric tool swings forward and backward and becomes unstable
Solution Approach 1:
The patent provides screw holes and recessed portions on both right and left lower side surfaces of the housing, allowing asymmetric attachment options. This local quality variation enables the fastener tool to be attached in different orientations, optimizing both suspension capability and carrying stability depending on the attachment side chosen.
3Stability of the object's composition
If the fastener tool is attached to the housing, then it provides engagement portion protruding rearward, but the attachment mechanism needs to prevent rotation while allowing secure mounting
Solution Approach 1:
The patent combines multiple attachment functions into a unified mechanism: screw holes provide secure mounting, recessed portions prevent rotation, and the base portion integrates both screw mounting holes and anti-rotation protrusions. This merging of functions achieves stable attachment without requiring complex separate mechanisms for each function.
Data Source
AI summary
A rechargeable electric tool includes a housing having a lower end, to which a battery is attached, and a fastener tool configured to be attached to a lower side surface of the housing. The fastener tool includes a plate-like base portion, and an engagement portion joined to the base portion. The engagement portion protrudes rearward of the housing when the fastener tool is attached to the housing.